package org.service.gateway;

import org.apache.tomcat.util.net.AbstractEndpoint.Acceptor;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.feign.EnableFeignClients;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

/**
 * 
 * ClassName: ServiceGatewayApplication <br/>
 * Function: TODO ADD FUNCTION. <br/>
 * Reason: TODO ADD REASON(可选). <br/>
 * date: 2019年9月30日 上午11:20:35 <br/>
 *
 * @author dengqian
 * @version
 * @since JDK 1.8
 */
@EnableZuulProxy
@EnableFeignClients
@EnableDiscoveryClient
@SpringBootApplication
public class ServiceGatewayApplication {
    @Bean
    @LoadBalanced
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }

    @Bean
    // 前后分离 ajax跨域调用处理
    public CorsFilter corsFilter() {
        final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        final CorsConfiguration config = new CorsConfiguration();
        config.setAllowCredentials(true); // 允许cookies跨域
        config.addAllowedOrigin("*");// 允许向该服务器提交请求的URI，*表示全部允许。。这里尽量限制来源域，比如http://xxxx:8080
                                     // ,以降低安全风险。。
        config.addAllowedHeader("*");// 允许访问的头信息,*表示全部
        config.setMaxAge(18000L);// 预检请求的缓存时间（秒），即在这个时间段里，对于相同的跨域请求不会再预检了
        config.addAllowedMethod("*");// 允许提交请求的方法，*表示全部允许，也可以单独设置GET、PUT等
        /*
         * config.addAllowedMethod("HEAD"); config.addAllowedMethod("GET");//
         * 允许Get的请求方法 config.addAllowedMethod("PUT");
         * config.addAllowedMethod("POST"); config.addAllowedMethod("DELETE");
         * config.addAllowedMethod("PATCH");
         */
        source.registerCorsConfiguration("/**", config);
        return new CorsFilter(source);
    }

    public static void main(String[] args) {
//        Acceptor
        SpringApplication.run(ServiceGatewayApplication.class, args);
    }
}
